Spark plug gapper



FIG. 1 is a top perspective view of a spark plug gapper showing my new design;

FIG. 2 is a top plan view thereof, the bottom being substantially flat, plain, and unornamented;

FIG. 3 is a front side elevational view thereof;

FIG. 4 is a cross sectional view thereof as taken from line 44 of FIG. 2.

FIG. 5 is a rear side elevational view thereof. 

The ornamental design for a spark plug gapper, as shown and described. 